JPH0741274U - Heat exchanger - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the productivity of a heat exchanger having a fixing member for fixing a heat medium supply / discharge pipe. [Structure] A plurality of heat exchange tubes 3 and fins 4 are alternately arranged between a pair of left and right header pipes 2 to form a main part of the heat exchanger 1. The fixing member 10 is formed of an extruded shape member integrally including a support portion 11 that engages with the header pipe 2 and a joint portion 12 that connects the refrigerant discharge pipe 7 that is connected to the header pipe 2. As a result, the supporting portion 11 of the fixing member 10 can be attached by engaging with the outer peripheral surface of the header pipe 2, and the fixing member 10 can be integrated with the header pipe 2 at the same time as the header pipe 2, the heat exchange pipe 3 and the fins 4. It can be brazed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger, and more particularly to an improvement of a heat exchanger used as, for example, a condenser or an evaporator.

[0002]

[Prior art]

 As a conventional heat exchanger of this type, a plurality of parallel heat exchange tubes are connected between a pair of header pipes, fins are arranged between adjacent heat exchange tubes, and fins are provided outside the heat exchange tubes at both ends. There is known a so-called multi-flow type heat exchanger in which a protective frame member (side plate) is arranged via a heat exchanger. The heat exchanger configured as described above exchanges heat of the air flowing between the fins with the heat medium supplied / exhausted from the heat medium supply / exhaust pipe for supplying or discharging the heat medium connected to the header pipe. Is.

The heat exchanger configured as described above is packaged in a heating furnace or the like in a state where the header pipe, the heat exchange pipe, the fins, and the side plates each formed of an aluminum member are held by a restraining jig. It is formed by brazing.

By the way, in order to arrange the heat exchanger in the limited space of the automobile body, the heat medium supply / discharge pipes connected to the header pipe are connected to the heat medium supply side or discharge side pipe connection portion. Need to extend and connect. Therefore, conventionally, as shown in FIGS. 12 and 13, a pair of support members 41 that cooperate with each other to sandwich the heat medium supply / discharge pipes 30 connected to the header pipe 2 on both sides of the header pipe 2. , 42 are held by a fixing member 20 which is connected to a bolt 43 by a bolt 43. 12 and 13, reference numeral 3 is a heat exchange tube, 4 is a fin interposed between the heat exchange tubes 3, and 5 is a side plate.

[0005]

However, in the conventional structure, since two types of supporting members 41 and 42 and bolts 43 are required in addition to the fixing member 20, there is a problem that the number of parts increases. In addition, since the fixing member 20 is brazed in the heating furnace after the fixing member 20 is attached to the header pipe 2 with the supporting members 41, 42 and the bolts 43, it takes a lot of time to assemble the heat exchanger, which leads to a high productivity. There is a problem of causing a decline. In addition, welding may be required when temporarily fixing the fixing member 20, and in this case, another step such as welding is added before the brazing step, which further deteriorates the assembly workability. .

The present invention has been made in view of the above circumstances, and a fixing member for fixing a heat medium supply / discharge pipe can be easily attached to a heat exchanger without the need for temporary fixing by welding. It is also an object of the present invention to provide a heat exchanger capable of reducing the number of constituent members and cost.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, a heat exchanger of the present invention comprises a header pipe connecting a plurality of heat exchange pipes, a heat medium supply / discharge pipe for supplying or discharging a heat medium connected to the header pipe, In a heat exchanger comprising a fixing member for fixing a medium supply / discharge pipe, a support portion for engaging the header pipe with the fixing member and a joint portion for the heat medium supply / discharge pipe are integrally formed. It is characterized in that it is formed from the extruded shape material.

In this invention, it is preferable to fix the support portion of the fixing member and the bracket to the header pipe. In this case, it is preferable that the bracket is provided with a positioning recess for the supporting portion of the fixing member so that the fixing member can be accurately attached to a predetermined position.

Further, instead of the bracket, a lock receiving portion for locking the support portion of the fixing member may be formed on the header pipe.

Further, by providing the supporting portion of the fixing member with a fall-prevention projection that is engaged with the bracket or the engagement receiving portion of the header pipe, it is possible to stabilize the attachment of the fixing member to the header pipe. Is preferred.

[0011]

[Action]

 According to the heat exchanger of the present invention configured as described above, the fixing member is an extruded shape member integrally including a support portion engaging with the header pipe and a joint portion of the heat medium supply / discharge pipe. By forming it, it is possible to reduce the number of constituent members and facilitate the attachment to the heat exchanger.

Further, by fixing the support portion of the fixing member and the bracket to the header pipe at the same time, the fixing member can be stably attached to the header pipe, and the fixing member and the header pipe can be brazed. It can be reliable and easy. In this case, by providing the bracket with the positioning recess for the support part of the fixing member, the fixing member can be accurately attached to the predetermined position, and the brazing of the fixing member and the header pipe can be performed securely and easily. Can be

Further, by forming the lock receiving portion that locks the support portion of the fixing member on the header pipe, the fixing member can be attached to the header pipe in a stable state, and the fixing member and the header pipe may be joined together. The attachment can be made sure and easy.

Further, by providing the supporting portion of the fixing member with a fall-preventing projection that is locked to the bracket or the locking receiving portion of the header pipe, the mounting of the fixing member to the header pipe can be stabilized, The fixing member and the header pipe can be brazed securely and easily.

[0015]

【Example】

 An embodiment of the present invention will be described below in detail with reference to the drawings. Here, the same parts as in the conventional case will be described with the same reference numerals.

First Embodiment FIG. 1 is a perspective view of a heat exchanger of the present invention, and FIG. 2 is a sectional view taken along the line AA of FIG.

In the heat exchanger 1 of the present invention, a plurality of flat tube-shaped heat exchange tubes 3 and corrugated fins 4 are alternately arranged between a pair of left and right header pipes 2, and both ends of the heat exchanger tubes 3 are arranged. The side plate 5, which is a protective frame member, is arranged at each of the upper and lower ends to form a main part.

A supply pipe 6 for a heat medium, for example, a cooling medium is connected to an upper part of one header pipe 2 (left side in the drawing), and a refrigerant discharge pipe is connected to a lower part of the other header pipe 2 (right side in the drawing). 7 is connected, and the refrigerant discharge pipe 7 extends upward along the header pipe 2 and its tip end side is fixedly held by a fixing member 10 fixed to the header pipe 2.

As shown in FIG. 2, the fixing member 10 has a support portion 11 formed in an arcuate cross section for engaging along the outer peripheral surface of the header pipe 2, and a rectangular shape from the tip of the support portion 11. It is formed in a piece shape by cutting an extruded profile made of an aluminum alloy having a joint portion 12 that swells into a single piece, into an appropriate size. The joint portion 12 is provided with a mounting hole 13 for connecting the refrigerant discharge pipe 7 and the pipe 8.

In the heat exchanger 1 of the present invention configured as described above, the heat exchange tube 3 is inserted and connected to the insertion hole (not shown) provided in the header pipe 2. Further, the header pipe 2, the heat exchange pipe 3 and the fins 4 are each formed of an aluminum alloy material, and at least the fins 4 and the header pipe 2 or the fixing member 10 are brazing sheets coated with a brazing material layer ( Member).

To assemble the heat exchanger 1 configured as described above, the heat exchange pipes 3 and the fins 4 are alternately arranged and connected between the header pipes 2 and 2, and the heat exchange pipes 3 at the upper and lower ends are connected. After arranging the side plate 5 on the outer side (specifically, on the outer side of the fins 4 at the upper and lower ends), the support portion 11 of the fixing member 10 is attached to a predetermined position of the header pipe 2. Then, it can be formed by collectively brazing in a heating furnace or the like with the outside of the fixing member 10 being held by a restraining jig (not shown).

Therefore, the fixing member 10 can be fixed at the same time as assembling the heat exchanger 1 without using a separate member such as a supporting member as in the conventional case.

Second Embodiment FIG. 4 is a sectional view of the essential parts of the second embodiment of the present invention, FIG. 5 is a side view of FIG. 4, and FIG. 6 is an exploded perspective view of the essential parts of the second embodiment. There is.

The second embodiment is a case where the header pipe 2 and the fixing member 10 can be securely attached. That is, with the support portion 11 of the fixing member 10 engaged with the outer peripheral surface of the header pipe 2, the support portion 11 of the fixing member 10 and the bracket 15 are attached to the header pipe 2 with the bracket 15 having a gutter-shaped cross section. This is the case when they are fixed at the same time. In this case, the bracket 15 is formed of a trough-shaped member made of aluminum alloy, and the opening 16 side is slightly elastically deformable. Further, by providing the positioning recess 17 that bulges outward on one side of the opening 16 of the bracket 15, the mounting position of the fixing member 10 can be made accurate, and the mounting can be ensured. Can be

With this structure, the bracket 15 can be attached with the support portion 11 of the fixing member 10 engaged with the outer peripheral surface of the header pipe 2. The support portion 11 of the fixing member 10 may be attached after attaching the bracket 15 to the outer peripheral surface of the header pipe 2 in advance.

Third Embodiment FIG. 7 is a sectional view of the essential parts of a third embodiment of the present invention, and FIG. 8 is a perspective view of the header pipe 2 and the fixing member 10 in the third embodiment.

The third embodiment is a case where the fixing member 10 can be securely attached without using the bracket 15 of the second embodiment. That is, on the outer peripheral surface of the header pipe 2, a groove-shaped lock receiving portion 18 that opens outward is formed, and the support portion 11 of the fixing member 10 is inserted (locking) into the lock receiving portion 18. ) This is possible. In this case, the lock receiving portion 18 can be integrally formed by forming the header pipe 20 with an extruded shape member made of an aluminum alloy. Therefore, the number of constituent members can be further reduced, and the fixing member 10 can be securely attached.

[Fourth Embodiment] FIG. 9 is a sectional view of a main portion of a fourth embodiment of the present invention, and FIG. 10 is a perspective view of a fixing member 10 in the fourth embodiment.

The fourth embodiment is a case where the attachment of the fixing member 10 to the header pipe 20 is stabilized. That is, this is a case where the fall prevention protrusion 19 is provided outside the support portion 11 of the fixing member 10 and the fall prevention protrusion 19 is brought into contact with the opening end face of the bracket 15 in the second embodiment. . In this manner, the fall prevention projection 19 provided on the support portion 11 of the fixing member 10 is brought into contact with the opening end surface of the bracket 15 so that the fixing member 10 is stably attached to the outer peripheral surface of the header pipe 2. The header pipe 2 and the fixing member 10 can be brazed to each other by carrying them into the heating furnace and heat-treating them as they are.

[Fifth Embodiment] FIG. 11 is a sectional view showing an essential part of a fifth embodiment of the present invention. The fifth embodiment is a modification in which the attachment of the fixing member 10 to the header pipe 2 is stabilized. That is, similarly to the fourth embodiment, the fall prevention protrusion 19 is provided on the outside of the support portion 11 of the fixing member 10, and the fall prevention protrusion 19 is provided on the header pipe 2 in the third embodiment. This is a case where the stopper portion 18 is formed so as to be able to contact the open end of the stopper portion 18. As described above, the fall prevention projection 19 provided on the support portion 11 of the fixing member 10 is brought into contact with the opening end of the lock receiving portion 18 provided on the header pipe 2 so that the same manner as in the fourth embodiment. The fixing member 10 can be attached to the outer peripheral surface of the header pipe 2 in a stable state, and the header pipe 2 and the fixing member 10 are brazed as they are by being carried into a heating furnace and subjected to heat treatment. be able to.

In the above embodiment, the case where the refrigerant discharge pipe 7 is fixed by the fixing member 10 has been described, but the refrigerant supply pipe 6 can be fixed by the fixing member 10.

[0032]

[Effect of device]

 As described above, according to the heat exchanger of the present invention, since it is configured as described above, the following effects can be obtained.

1) According to the heat exchanger of claim 1, the fixing member is an extruded shape member integrally having a support portion engaging with the header pipe and a joint portion of the heat medium supply / discharge pipe. Since it is formed as described above, it is possible to reduce the number of constituent members and facilitate the attachment to the heat exchanger.

2) According to the heat exchanger of claim 2, since the support portion of the fixing member and the bracket are fixed to the header pipe, the fixing member can be stably attached to the header pipe and fixed. It is possible to securely and easily braze the member and the header pipe.

3) According to the heat exchanger of claim 3, since the bracket is provided with the recess for locating the support portion of the fixing member, the fixing member can be accurately mounted at a predetermined position, and further fixed. It is possible to securely and easily braze the member and the header pipe.

4) According to the heat exchanger of claim 4, since the lock receiving portion that locks the support portion of the fixing member is formed in the header pipe, the number of constituent members can be further reduced and the fixing can be performed. The member can be attached to the header pipe in a stable state, and the brazing between the fixing member and the header pipe can be performed reliably and easily.

5) According to the heat exchanger of claim 5 or 6, since the supporting portion of the fixing member is provided with the fall-preventing protrusion that is locked to the bracket or the locking receiving portion of the header pipe, the fixing member is fixed. Can be stably attached to the header pipe, and brazing of the fixing member and the header pipe can be reliably and easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a heat exchanger according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing a header pipe and a fixing member in the first embodiment.

FIG. 4 is a cross-sectional view of an essential part of a second embodiment of the present invention.

FIG. 5 is a side view of FIG.

FIG. 6 is an exploded perspective view showing a header pipe, a fixing member and a bracket in the second embodiment.

FIG. 7 is a cross-sectional view of essential parts of a third embodiment of the present invention.

FIG. 8 is an exploded perspective view showing a header pipe and a fixing member in the third embodiment.

FIG. 9 is a cross-sectional view of essential parts of a fourth embodiment of the present invention.

FIG. 10 is a perspective view of a fixing member according to a fourth embodiment.

FIG. 11 is a cross-sectional view of essential parts of a fifth embodiment of the present invention.

FIG. 12 is a front view showing another mounting state of the heat medium supply / discharge pipe of the conventional heat exchanger.

13 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 2 Header pipe 3 Heat exchange pipe 6 Refrigerant supply pipe 7 Refrigerant discharge pipe 10 Fixing member 11 Support part 12 Joint part 15 Bracket 17 Positioning recess 18 Lock receiving part 19 Fall prevention protrusion

Claims (6)

[Scope of utility model registration request] 1. A header pipe for connecting a plurality of heat exchange pipes, a heat medium supply / discharge pipe for supplying or discharging a heat medium connected to the header pipe, and a fixing member for fixing the heat medium supply / discharge pipe. In the heat exchanger having the above-mentioned, the fixing member is formed of an extruded shape member integrally including a support portion engaging with the header pipe and a joint portion of the heat medium supply / discharge pipe. A heat exchanger characterized by. 2. The heat exchanger according to claim 1, wherein the support portion of the fixing member and the bracket are fixed to the header pipe. 3. The heat exchanger according to claim 2, wherein the bracket is provided with a positioning recess for the support portion of the fixing member. 4. The heat exchanger according to claim 1, wherein the header pipe is formed with a lock receiving portion for locking the support portion of the fixing member. 5. The heat exchanger according to claim 2, wherein the supporting portion of the fixing member is provided with a fall-preventing projection that is engaged with the bracket. 6. The heat exchanger according to claim 4, wherein the supporting portion of the fixing member is provided with a fall-preventing projection which is locked to the locking receiving portion of the header pipe.